![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to elfload.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Qemu by Fabrice Bellard] / qemu / linux-user|
Return to elfload.c CVS log | Up to [Qemu by Fabrice Bellard] / qemu / linux-user |
1.1 root 1: /* This is the Linux kernel elf-loading code, ported into user space */
2:
3: #include <stdio.h>
4: #include <sys/types.h>
5: #include <fcntl.h>
6: #include <errno.h>
7: #include <unistd.h>
8: #include <sys/mman.h>
9: #include <stdlib.h>
10: #include <string.h>
11:
12: #include "qemu.h"
13: #include "disas.h"
14:
15: /* this flag is uneffective under linux too, should be deleted */
16: #ifndef MAP_DENYWRITE
17: #define MAP_DENYWRITE 0
18: #endif
19:
20: /* should probably go in elf.h */
21: #ifndef ELIBBAD
22: #define ELIBBAD 80
23: #endif
24:
25: #ifdef TARGET_I386
26:
1.1.1.2 root 27: #define ELF_PLATFORM get_elf_platform()
28:
29: static const char *get_elf_platform(void)
30: {
31: static char elf_platform[] = "i386";
32: int family = (global_env->cpuid_version >> 8) & 0xff;
33: if (family > 6)
34: family = 6;
35: if (family >= 3)
36: elf_platform[1] = '0' + family;
37: return elf_platform;
38: }
39:
40: #define ELF_HWCAP get_elf_hwcap()
41:
42: static uint32_t get_elf_hwcap(void)
43: {
44: return global_env->cpuid_features;
45: }
46:
1.1 root 47: #define ELF_START_MMAP 0x80000000
48:
49: /*
50: * This is used to ensure we don't load something for the wrong architecture.
51: */
52: #define elf_check_arch(x) ( ((x) == EM_386) || ((x) == EM_486) )
53:
54: /*
55: * These are used to set parameters in the core dumps.
56: */
57: #define ELF_CLASS ELFCLASS32
58: #define ELF_DATA ELFDATA2LSB
59: #define ELF_ARCH EM_386
60:
61: static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
62: {
63: regs->esp = infop->start_stack;
64: regs->eip = infop->entry;
1.1.1.4 root 65:
66: /* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program
67: starts %edx contains a pointer to a function which might be
68: registered using `atexit'. This provides a mean for the
69: dynamic linker to call DT_FINI functions for shared libraries
70: that have been loaded before the code runs.
71:
72: A value of 0 tells we have no such handler. */
73: regs->edx = 0;
1.1 root 74: }
75:
76: #define USE_ELF_CORE_DUMP
77: #define ELF_EXEC_PAGESIZE 4096
78:
79: #endif
80:
81: #ifdef TARGET_ARM
82:
83: #define ELF_START_MMAP 0x80000000
84:
85: #define elf_check_arch(x) ( (x) == EM_ARM )
86:
87: #define ELF_CLASS ELFCLASS32
88: #ifdef TARGET_WORDS_BIGENDIAN
89: #define ELF_DATA ELFDATA2MSB
90: #else
91: #define ELF_DATA ELFDATA2LSB
92: #endif
93: #define ELF_ARCH EM_ARM
94:
95: static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
96: {
1.1.1.3 root 97: target_long stack = infop->start_stack;
1.1 root 98: memset(regs, 0, sizeof(*regs));
99: regs->ARM_cpsr = 0x10;
1.1.1.3 root 100: if (infop->entry & 1)
101: regs->ARM_cpsr |= CPSR_T;
102: regs->ARM_pc = infop->entry & 0xfffffffe;
1.1 root 103: regs->ARM_sp = infop->start_stack;
1.1.1.3 root 104: regs->ARM_r2 = tgetl(stack + 8); /* envp */
105: regs->ARM_r1 = tgetl(stack + 4); /* envp */
1.1 root 106: /* XXX: it seems that r0 is zeroed after ! */
1.1.1.4 root 107: regs->ARM_r0 = 0;
108: /* For uClinux PIC binaries. */
109: regs->ARM_r10 = infop->start_data;
1.1 root 110: }
111:
112: #define USE_ELF_CORE_DUMP
113: #define ELF_EXEC_PAGESIZE 4096
114:
1.1.1.2 root 115: enum
116: {
117: ARM_HWCAP_ARM_SWP = 1 << 0,
118: ARM_HWCAP_ARM_HALF = 1 << 1,
119: ARM_HWCAP_ARM_THUMB = 1 << 2,
120: ARM_HWCAP_ARM_26BIT = 1 << 3,
121: ARM_HWCAP_ARM_FAST_MULT = 1 << 4,
122: ARM_HWCAP_ARM_FPA = 1 << 5,
123: ARM_HWCAP_ARM_VFP = 1 << 6,
124: ARM_HWCAP_ARM_EDSP = 1 << 7,
125: };
126:
127: #define ELF_HWCAP (ARM_HWCAP_ARM_SWP | ARM_HWCAP_ARM_HALF \
128: | ARM_HWCAP_ARM_THUMB | ARM_HWCAP_ARM_FAST_MULT \
129: | ARM_HWCAP_ARM_FPA | ARM_HWCAP_ARM_VFP)
130:
1.1 root 131: #endif
132:
133: #ifdef TARGET_SPARC
134: #ifdef TARGET_SPARC64
135:
136: #define ELF_START_MMAP 0x80000000
137:
1.1.1.4 root 138: #define elf_check_arch(x) ( (x) == EM_SPARCV9 )
1.1 root 139:
140: #define ELF_CLASS ELFCLASS64
141: #define ELF_DATA ELFDATA2MSB
1.1.1.4 root 142: #define ELF_ARCH EM_SPARCV9
1.1 root 143:
1.1.1.4 root 144: #define STACK_BIAS 2047
1.1 root 145:
146: static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
147: {
148: regs->tstate = 0;
149: regs->pc = infop->entry;
150: regs->npc = regs->pc + 4;
151: regs->y = 0;
1.1.1.4 root 152: regs->u_regs[14] = infop->start_stack - 16 * 8 - STACK_BIAS;
1.1 root 153: }
154:
155: #else
156: #define ELF_START_MMAP 0x80000000
157:
158: #define elf_check_arch(x) ( (x) == EM_SPARC )
159:
160: #define ELF_CLASS ELFCLASS32
161: #define ELF_DATA ELFDATA2MSB
162: #define ELF_ARCH EM_SPARC
163:
164: static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
165: {
166: regs->psr = 0;
167: regs->pc = infop->entry;
168: regs->npc = regs->pc + 4;
169: regs->y = 0;
170: regs->u_regs[14] = infop->start_stack - 16 * 4;
171: }
172:
173: #endif
174: #endif
175:
176: #ifdef TARGET_PPC
177:
178: #define ELF_START_MMAP 0x80000000
179:
180: #define elf_check_arch(x) ( (x) == EM_PPC )
181:
182: #define ELF_CLASS ELFCLASS32
183: #ifdef TARGET_WORDS_BIGENDIAN
184: #define ELF_DATA ELFDATA2MSB
185: #else
186: #define ELF_DATA ELFDATA2LSB
187: #endif
188: #define ELF_ARCH EM_PPC
189:
190: /*
191: * We need to put in some extra aux table entries to tell glibc what
192: * the cache block size is, so it can use the dcbz instruction safely.
193: */
194: #define AT_DCACHEBSIZE 19
195: #define AT_ICACHEBSIZE 20
196: #define AT_UCACHEBSIZE 21
197: /* A special ignored type value for PPC, for glibc compatibility. */
198: #define AT_IGNOREPPC 22
199: /*
200: * The requirements here are:
201: * - keep the final alignment of sp (sp & 0xf)
202: * - make sure the 32-bit value at the first 16 byte aligned position of
203: * AUXV is greater than 16 for glibc compatibility.
204: * AT_IGNOREPPC is used for that.
205: * - for compatibility with glibc ARCH_DLINFO must always be defined on PPC,
206: * even if DLINFO_ARCH_ITEMS goes to zero or is undefined.
207: */
208: #define DLINFO_ARCH_ITEMS 5
209: #define ARCH_DLINFO \
210: do { \
211: NEW_AUX_ENT(AT_DCACHEBSIZE, 0x20); \
212: NEW_AUX_ENT(AT_ICACHEBSIZE, 0x20); \
213: NEW_AUX_ENT(AT_UCACHEBSIZE, 0); \
214: /* \
215: * Now handle glibc compatibility. \
216: */ \
217: NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
218: NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
219: } while (0)
220:
221: static inline void init_thread(struct target_pt_regs *_regs, struct image_info *infop)
222: {
1.1.1.4 root 223: target_ulong pos = infop->start_stack;
224: target_ulong tmp;
225:
1.1 root 226: _regs->msr = 1 << MSR_PR; /* Set user mode */
227: _regs->gpr[1] = infop->start_stack;
228: _regs->nip = infop->entry;
1.1.1.4 root 229: /* Note that isn't exactly what regular kernel does
230: * but this is what the ABI wants and is needed to allow
231: * execution of PPC BSD programs.
232: */
233: _regs->gpr[3] = tgetl(pos);
234: pos += sizeof(target_ulong);
235: _regs->gpr[4] = pos;
236: for (tmp = 1; tmp != 0; pos += sizeof(target_ulong))
237: tmp = ldl(pos);
238: _regs->gpr[5] = pos;
1.1 root 239: }
240:
241: #define USE_ELF_CORE_DUMP
242: #define ELF_EXEC_PAGESIZE 4096
243:
244: #endif
245:
1.1.1.2 root 246: #ifdef TARGET_MIPS
247:
248: #define ELF_START_MMAP 0x80000000
249:
250: #define elf_check_arch(x) ( (x) == EM_MIPS )
251:
252: #define ELF_CLASS ELFCLASS32
253: #ifdef TARGET_WORDS_BIGENDIAN
254: #define ELF_DATA ELFDATA2MSB
255: #else
256: #define ELF_DATA ELFDATA2LSB
257: #endif
258: #define ELF_ARCH EM_MIPS
259:
260: static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
261: {
262: regs->cp0_status = CP0St_UM;
263: regs->cp0_epc = infop->entry;
264: regs->regs[29] = infop->start_stack;
265: }
266:
267: #endif /* TARGET_MIPS */
268:
1.1.1.3 root 269: #ifdef TARGET_SH4
270:
271: #define ELF_START_MMAP 0x80000000
272:
273: #define elf_check_arch(x) ( (x) == EM_SH )
274:
275: #define ELF_CLASS ELFCLASS32
276: #define ELF_DATA ELFDATA2LSB
277: #define ELF_ARCH EM_SH
278:
279: static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
280: {
281: /* Check other registers XXXXX */
282: regs->pc = infop->entry;
283: regs->regs[15] = infop->start_stack - 16 * 4;
284: }
285:
286: #define USE_ELF_CORE_DUMP
287: #define ELF_EXEC_PAGESIZE 4096
288:
289: #endif
290:
1.1.1.5 ! root 291: #ifdef TARGET_M68K
! 292:
! 293: #define ELF_START_MMAP 0x80000000
! 294:
! 295: #define elf_check_arch(x) ( (x) == EM_68K )
! 296:
! 297: #define ELF_CLASS ELFCLASS32
! 298: #define ELF_DATA ELFDATA2MSB
! 299: #define ELF_ARCH EM_68K
! 300:
! 301: /* ??? Does this need to do anything?
! 302: #define ELF_PLAT_INIT(_r) */
! 303:
! 304: static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
! 305: {
! 306: regs->usp = infop->start_stack;
! 307: regs->sr = 0;
! 308: regs->pc = infop->entry;
! 309: }
! 310:
! 311: #define USE_ELF_CORE_DUMP
! 312: #define ELF_EXEC_PAGESIZE 8192
! 313:
! 314: #endif
! 315:
1.1.1.2 root 316: #ifndef ELF_PLATFORM
317: #define ELF_PLATFORM (NULL)
318: #endif
319:
320: #ifndef ELF_HWCAP
321: #define ELF_HWCAP 0
322: #endif
323:
1.1 root 324: #include "elf.h"
325:
326: struct exec
327: {
328: unsigned int a_info; /* Use macros N_MAGIC, etc for access */
329: unsigned int a_text; /* length of text, in bytes */
330: unsigned int a_data; /* length of data, in bytes */
331: unsigned int a_bss; /* length of uninitialized data area, in bytes */
332: unsigned int a_syms; /* length of symbol table data in file, in bytes */
333: unsigned int a_entry; /* start address */
334: unsigned int a_trsize; /* length of relocation info for text, in bytes */
335: unsigned int a_drsize; /* length of relocation info for data, in bytes */
336: };
337:
338:
339: #define N_MAGIC(exec) ((exec).a_info & 0xffff)
340: #define OMAGIC 0407
341: #define NMAGIC 0410
342: #define ZMAGIC 0413
343: #define QMAGIC 0314
344:
345: /* max code+data+bss space allocated to elf interpreter */
346: #define INTERP_MAP_SIZE (32 * 1024 * 1024)
347:
348: /* max code+data+bss+brk space allocated to ET_DYN executables */
349: #define ET_DYN_MAP_SIZE (128 * 1024 * 1024)
350:
351: /* from personality.h */
352:
353: /* Flags for bug emulation. These occupy the top three bytes. */
354: #define STICKY_TIMEOUTS 0x4000000
355: #define WHOLE_SECONDS 0x2000000
356:
357: /* Personality types. These go in the low byte. Avoid using the top bit,
358: * it will conflict with error returns.
359: */
360: #define PER_MASK (0x00ff)
361: #define PER_LINUX (0x0000)
362: #define PER_SVR4 (0x0001 | STICKY_TIMEOUTS)
363: #define PER_SVR3 (0x0002 | STICKY_TIMEOUTS)
364: #define PER_SCOSVR3 (0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS)
365: #define PER_WYSEV386 (0x0004 | STICKY_TIMEOUTS)
366: #define PER_ISCR4 (0x0005 | STICKY_TIMEOUTS)
367: #define PER_BSD (0x0006)
368: #define PER_XENIX (0x0007 | STICKY_TIMEOUTS)
369:
370: /* Necessary parameters */
371: #define TARGET_ELF_EXEC_PAGESIZE TARGET_PAGE_SIZE
372: #define TARGET_ELF_PAGESTART(_v) ((_v) & ~(unsigned long)(TARGET_ELF_EXEC_PAGESIZE-1))
373: #define TARGET_ELF_PAGEOFFSET(_v) ((_v) & (TARGET_ELF_EXEC_PAGESIZE-1))
374:
375: #define INTERPRETER_NONE 0
376: #define INTERPRETER_AOUT 1
377: #define INTERPRETER_ELF 2
378:
1.1.1.2 root 379: #define DLINFO_ITEMS 12
1.1 root 380:
381: static inline void memcpy_fromfs(void * to, const void * from, unsigned long n)
382: {
383: memcpy(to, from, n);
384: }
385:
386: extern unsigned long x86_stack_size;
387:
388: static int load_aout_interp(void * exptr, int interp_fd);
389:
390: #ifdef BSWAP_NEEDED
391: static void bswap_ehdr(struct elfhdr *ehdr)
392: {
393: bswap16s(&ehdr->e_type); /* Object file type */
394: bswap16s(&ehdr->e_machine); /* Architecture */
395: bswap32s(&ehdr->e_version); /* Object file version */
396: bswaptls(&ehdr->e_entry); /* Entry point virtual address */
397: bswaptls(&ehdr->e_phoff); /* Program header table file offset */
398: bswaptls(&ehdr->e_shoff); /* Section header table file offset */
399: bswap32s(&ehdr->e_flags); /* Processor-specific flags */
400: bswap16s(&ehdr->e_ehsize); /* ELF header size in bytes */
401: bswap16s(&ehdr->e_phentsize); /* Program header table entry size */
402: bswap16s(&ehdr->e_phnum); /* Program header table entry count */
403: bswap16s(&ehdr->e_shentsize); /* Section header table entry size */
404: bswap16s(&ehdr->e_shnum); /* Section header table entry count */
405: bswap16s(&ehdr->e_shstrndx); /* Section header string table index */
406: }
407:
408: static void bswap_phdr(struct elf_phdr *phdr)
409: {
410: bswap32s(&phdr->p_type); /* Segment type */
411: bswaptls(&phdr->p_offset); /* Segment file offset */
412: bswaptls(&phdr->p_vaddr); /* Segment virtual address */
413: bswaptls(&phdr->p_paddr); /* Segment physical address */
414: bswaptls(&phdr->p_filesz); /* Segment size in file */
415: bswaptls(&phdr->p_memsz); /* Segment size in memory */
416: bswap32s(&phdr->p_flags); /* Segment flags */
417: bswaptls(&phdr->p_align); /* Segment alignment */
418: }
419:
420: static void bswap_shdr(struct elf_shdr *shdr)
421: {
422: bswap32s(&shdr->sh_name);
423: bswap32s(&shdr->sh_type);
424: bswaptls(&shdr->sh_flags);
425: bswaptls(&shdr->sh_addr);
426: bswaptls(&shdr->sh_offset);
427: bswaptls(&shdr->sh_size);
428: bswap32s(&shdr->sh_link);
429: bswap32s(&shdr->sh_info);
430: bswaptls(&shdr->sh_addralign);
431: bswaptls(&shdr->sh_entsize);
432: }
433:
434: static void bswap_sym(Elf32_Sym *sym)
435: {
436: bswap32s(&sym->st_name);
437: bswap32s(&sym->st_value);
438: bswap32s(&sym->st_size);
439: bswap16s(&sym->st_shndx);
440: }
441: #endif
442:
443: /*
1.1.1.4 root 444: * 'copy_elf_strings()' copies argument/envelope strings from user
1.1 root 445: * memory to free pages in kernel mem. These are in a format ready
446: * to be put directly into the top of new user memory.
447: *
448: */
1.1.1.4 root 449: static unsigned long copy_elf_strings(int argc,char ** argv, void **page,
450: unsigned long p)
1.1 root 451: {
452: char *tmp, *tmp1, *pag = NULL;
453: int len, offset = 0;
454:
455: if (!p) {
456: return 0; /* bullet-proofing */
457: }
458: while (argc-- > 0) {
459: tmp = argv[argc];
460: if (!tmp) {
461: fprintf(stderr, "VFS: argc is wrong");
462: exit(-1);
463: }
464: tmp1 = tmp;
465: while (*tmp++);
466: len = tmp - tmp1;
467: if (p < len) { /* this shouldn't happen - 128kB */
468: return 0;
469: }
470: while (len) {
471: --p; --tmp; --len;
472: if (--offset < 0) {
473: offset = p % TARGET_PAGE_SIZE;
1.1.1.3 root 474: pag = (char *)page[p/TARGET_PAGE_SIZE];
1.1 root 475: if (!pag) {
1.1.1.3 root 476: pag = (char *)malloc(TARGET_PAGE_SIZE);
477: page[p/TARGET_PAGE_SIZE] = pag;
1.1 root 478: if (!pag)
479: return 0;
480: }
481: }
482: if (len == 0 || offset == 0) {
483: *(pag + offset) = *tmp;
484: }
485: else {
486: int bytes_to_copy = (len > offset) ? offset : len;
487: tmp -= bytes_to_copy;
488: p -= bytes_to_copy;
489: offset -= bytes_to_copy;
490: len -= bytes_to_copy;
491: memcpy_fromfs(pag + offset, tmp, bytes_to_copy + 1);
492: }
493: }
494: }
495: return p;
496: }
497:
1.1.1.3 root 498: unsigned long setup_arg_pages(target_ulong p, struct linux_binprm * bprm,
499: struct image_info * info)
1.1 root 500: {
1.1.1.3 root 501: target_ulong stack_base, size, error;
1.1 root 502: int i;
503:
504: /* Create enough stack to hold everything. If we don't use
505: * it for args, we'll use it for something else...
506: */
507: size = x86_stack_size;
508: if (size < MAX_ARG_PAGES*TARGET_PAGE_SIZE)
509: size = MAX_ARG_PAGES*TARGET_PAGE_SIZE;
510: error = target_mmap(0,
511: size + qemu_host_page_size,
512: PROT_READ | PROT_WRITE,
513: MAP_PRIVATE | MAP_ANONYMOUS,
514: -1, 0);
515: if (error == -1) {
516: perror("stk mmap");
517: exit(-1);
518: }
519: /* we reserve one extra page at the top of the stack as guard */
520: target_mprotect(error + size, qemu_host_page_size, PROT_NONE);
521:
522: stack_base = error + size - MAX_ARG_PAGES*TARGET_PAGE_SIZE;
523: p += stack_base;
524:
525: for (i = 0 ; i < MAX_ARG_PAGES ; i++) {
526: if (bprm->page[i]) {
527: info->rss++;
528:
1.1.1.3 root 529: memcpy_to_target(stack_base, bprm->page[i], TARGET_PAGE_SIZE);
530: free(bprm->page[i]);
1.1 root 531: }
1.1.1.3 root 532: stack_base += TARGET_PAGE_SIZE;
1.1 root 533: }
534: return p;
535: }
536:
537: static void set_brk(unsigned long start, unsigned long end)
538: {
539: /* page-align the start and end addresses... */
540: start = HOST_PAGE_ALIGN(start);
541: end = HOST_PAGE_ALIGN(end);
542: if (end <= start)
543: return;
544: if(target_mmap(start, end - start,
545: PROT_READ | PROT_WRITE | PROT_EXEC,
546: MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0) == -1) {
547: perror("cannot mmap brk");
548: exit(-1);
549: }
550: }
551:
552:
553: /* We need to explicitly zero any fractional pages after the data
554: section (i.e. bss). This would contain the junk from the file that
555: should not be in memory. */
1.1.1.5 ! root 556: static void padzero(unsigned long elf_bss, unsigned long last_bss)
1.1 root 557: {
558: unsigned long nbyte;
559:
1.1.1.5 ! root 560: if (elf_bss >= last_bss)
! 561: return;
! 562:
1.1 root 563: /* XXX: this is really a hack : if the real host page size is
564: smaller than the target page size, some pages after the end
565: of the file may not be mapped. A better fix would be to
566: patch target_mmap(), but it is more complicated as the file
567: size must be known */
568: if (qemu_real_host_page_size < qemu_host_page_size) {
569: unsigned long end_addr, end_addr1;
570: end_addr1 = (elf_bss + qemu_real_host_page_size - 1) &
571: ~(qemu_real_host_page_size - 1);
572: end_addr = HOST_PAGE_ALIGN(elf_bss);
573: if (end_addr1 < end_addr) {
574: mmap((void *)end_addr1, end_addr - end_addr1,
575: PROT_READ|PROT_WRITE|PROT_EXEC,
576: MAP_FIXED|MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
577: }
578: }
579:
580: nbyte = elf_bss & (qemu_host_page_size-1);
581: if (nbyte) {
582: nbyte = qemu_host_page_size - nbyte;
583: do {
1.1.1.3 root 584: tput8(elf_bss, 0);
585: elf_bss++;
1.1 root 586: } while (--nbyte);
587: }
588: }
589:
1.1.1.3 root 590:
591: static unsigned long create_elf_tables(target_ulong p, int argc, int envc,
592: struct elfhdr * exec,
593: unsigned long load_addr,
594: unsigned long load_bias,
595: unsigned long interp_load_addr, int ibcs,
596: struct image_info *info)
597: {
598: target_ulong sp;
599: int size;
600: target_ulong u_platform;
1.1.1.2 root 601: const char *k_platform;
1.1.1.3 root 602: const int n = sizeof(target_ulong);
1.1 root 603:
1.1.1.3 root 604: sp = p;
605: u_platform = 0;
1.1.1.2 root 606: k_platform = ELF_PLATFORM;
607: if (k_platform) {
608: size_t len = strlen(k_platform) + 1;
1.1.1.3 root 609: sp -= (len + n - 1) & ~(n - 1);
610: u_platform = sp;
611: memcpy_to_target(sp, k_platform, len);
1.1.1.2 root 612: }
1.1.1.3 root 613: /*
614: * Force 16 byte _final_ alignment here for generality.
615: */
616: sp = sp &~ (target_ulong)15;
617: size = (DLINFO_ITEMS + 1) * 2;
1.1.1.2 root 618: if (k_platform)
1.1.1.3 root 619: size += 2;
1.1 root 620: #ifdef DLINFO_ARCH_ITEMS
1.1.1.3 root 621: size += DLINFO_ARCH_ITEMS * 2;
1.1 root 622: #endif
1.1.1.3 root 623: size += envc + argc + 2;
624: size += (!ibcs ? 3 : 1); /* argc itself */
625: size *= n;
626: if (size & 15)
627: sp -= 16 - (size & 15);
1.1 root 628:
1.1.1.3 root 629: #define NEW_AUX_ENT(id, val) do { \
630: sp -= n; tputl(sp, val); \
631: sp -= n; tputl(sp, id); \
632: } while(0)
1.1 root 633: NEW_AUX_ENT (AT_NULL, 0);
634:
635: /* There must be exactly DLINFO_ITEMS entries here. */
636: NEW_AUX_ENT(AT_PHDR, (target_ulong)(load_addr + exec->e_phoff));
637: NEW_AUX_ENT(AT_PHENT, (target_ulong)(sizeof (struct elf_phdr)));
638: NEW_AUX_ENT(AT_PHNUM, (target_ulong)(exec->e_phnum));
639: NEW_AUX_ENT(AT_PAGESZ, (target_ulong)(TARGET_PAGE_SIZE));
640: NEW_AUX_ENT(AT_BASE, (target_ulong)(interp_load_addr));
641: NEW_AUX_ENT(AT_FLAGS, (target_ulong)0);
642: NEW_AUX_ENT(AT_ENTRY, load_bias + exec->e_entry);
643: NEW_AUX_ENT(AT_UID, (target_ulong) getuid());
644: NEW_AUX_ENT(AT_EUID, (target_ulong) geteuid());
645: NEW_AUX_ENT(AT_GID, (target_ulong) getgid());
646: NEW_AUX_ENT(AT_EGID, (target_ulong) getegid());
1.1.1.2 root 647: NEW_AUX_ENT(AT_HWCAP, (target_ulong) ELF_HWCAP);
648: if (k_platform)
1.1.1.3 root 649: NEW_AUX_ENT(AT_PLATFORM, u_platform);
1.1 root 650: #ifdef ARCH_DLINFO
651: /*
652: * ARCH_DLINFO must come last so platform specific code can enforce
653: * special alignment requirements on the AUXV if necessary (eg. PPC).
654: */
655: ARCH_DLINFO;
656: #endif
657: #undef NEW_AUX_ENT
658:
1.1.1.4 root 659: sp = loader_build_argptr(envc, argc, sp, p, !ibcs);
1.1 root 660: return sp;
661: }
662:
663:
664: static unsigned long load_elf_interp(struct elfhdr * interp_elf_ex,
665: int interpreter_fd,
666: unsigned long *interp_load_addr)
667: {
668: struct elf_phdr *elf_phdata = NULL;
669: struct elf_phdr *eppnt;
670: unsigned long load_addr = 0;
671: int load_addr_set = 0;
672: int retval;
673: unsigned long last_bss, elf_bss;
674: unsigned long error;
675: int i;
676:
677: elf_bss = 0;
678: last_bss = 0;
679: error = 0;
680:
681: #ifdef BSWAP_NEEDED
682: bswap_ehdr(interp_elf_ex);
683: #endif
684: /* First of all, some simple consistency checks */
685: if ((interp_elf_ex->e_type != ET_EXEC &&
686: interp_elf_ex->e_type != ET_DYN) ||
687: !elf_check_arch(interp_elf_ex->e_machine)) {
688: return ~0UL;
689: }
690:
691:
692: /* Now read in all of the header information */
693:
694: if (sizeof(struct elf_phdr) * interp_elf_ex->e_phnum > TARGET_PAGE_SIZE)
695: return ~0UL;
696:
697: elf_phdata = (struct elf_phdr *)
698: malloc(sizeof(struct elf_phdr) * interp_elf_ex->e_phnum);
699:
700: if (!elf_phdata)
701: return ~0UL;
702:
703: /*
704: * If the size of this structure has changed, then punt, since
705: * we will be doing the wrong thing.
706: */
707: if (interp_elf_ex->e_phentsize != sizeof(struct elf_phdr)) {
708: free(elf_phdata);
709: return ~0UL;
710: }
711:
712: retval = lseek(interpreter_fd, interp_elf_ex->e_phoff, SEEK_SET);
713: if(retval >= 0) {
714: retval = read(interpreter_fd,
715: (char *) elf_phdata,
716: sizeof(struct elf_phdr) * interp_elf_ex->e_phnum);
717: }
718: if (retval < 0) {
719: perror("load_elf_interp");
720: exit(-1);
721: free (elf_phdata);
722: return retval;
723: }
724: #ifdef BSWAP_NEEDED
725: eppnt = elf_phdata;
726: for (i=0; i<interp_elf_ex->e_phnum; i++, eppnt++) {
727: bswap_phdr(eppnt);
728: }
729: #endif
730:
731: if (interp_elf_ex->e_type == ET_DYN) {
732: /* in order to avoid harcoding the interpreter load
733: address in qemu, we allocate a big enough memory zone */
734: error = target_mmap(0, INTERP_MAP_SIZE,
735: PROT_NONE, MAP_PRIVATE | MAP_ANON,
736: -1, 0);
737: if (error == -1) {
738: perror("mmap");
739: exit(-1);
740: }
741: load_addr = error;
742: load_addr_set = 1;
743: }
744:
745: eppnt = elf_phdata;
746: for(i=0; i<interp_elf_ex->e_phnum; i++, eppnt++)
747: if (eppnt->p_type == PT_LOAD) {
748: int elf_type = MAP_PRIVATE | MAP_DENYWRITE;
749: int elf_prot = 0;
750: unsigned long vaddr = 0;
751: unsigned long k;
752:
753: if (eppnt->p_flags & PF_R) elf_prot = PROT_READ;
754: if (eppnt->p_flags & PF_W) elf_prot |= PROT_WRITE;
755: if (eppnt->p_flags & PF_X) elf_prot |= PROT_EXEC;
756: if (interp_elf_ex->e_type == ET_EXEC || load_addr_set) {
757: elf_type |= MAP_FIXED;
758: vaddr = eppnt->p_vaddr;
759: }
760: error = target_mmap(load_addr+TARGET_ELF_PAGESTART(vaddr),
761: eppnt->p_filesz + TARGET_ELF_PAGEOFFSET(eppnt->p_vaddr),
762: elf_prot,
763: elf_type,
764: interpreter_fd,
765: eppnt->p_offset - TARGET_ELF_PAGEOFFSET(eppnt->p_vaddr));
766:
1.1.1.3 root 767: if (error == -1) {
1.1 root 768: /* Real error */
769: close(interpreter_fd);
770: free(elf_phdata);
771: return ~0UL;
772: }
773:
774: if (!load_addr_set && interp_elf_ex->e_type == ET_DYN) {
775: load_addr = error;
776: load_addr_set = 1;
777: }
778:
779: /*
780: * Find the end of the file mapping for this phdr, and keep
781: * track of the largest address we see for this.
782: */
783: k = load_addr + eppnt->p_vaddr + eppnt->p_filesz;
784: if (k > elf_bss) elf_bss = k;
785:
786: /*
787: * Do the same thing for the memory mapping - between
788: * elf_bss and last_bss is the bss section.
789: */
790: k = load_addr + eppnt->p_memsz + eppnt->p_vaddr;
791: if (k > last_bss) last_bss = k;
792: }
793:
794: /* Now use mmap to map the library into memory. */
795:
796: close(interpreter_fd);
797:
798: /*
799: * Now fill out the bss section. First pad the last page up
800: * to the page boundary, and then perform a mmap to make sure
801: * that there are zeromapped pages up to and including the last
802: * bss page.
803: */
1.1.1.5 ! root 804: padzero(elf_bss, last_bss);
1.1 root 805: elf_bss = TARGET_ELF_PAGESTART(elf_bss + qemu_host_page_size - 1); /* What we have mapped so far */
806:
807: /* Map the last of the bss segment */
808: if (last_bss > elf_bss) {
809: target_mmap(elf_bss, last_bss-elf_bss,
810: PROT_READ|PROT_WRITE|PROT_EXEC,
811: MAP_FIXED|MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
812: }
813: free(elf_phdata);
814:
815: *interp_load_addr = load_addr;
816: return ((unsigned long) interp_elf_ex->e_entry) + load_addr;
817: }
818:
819: /* Best attempt to load symbols from this ELF object. */
820: static void load_symbols(struct elfhdr *hdr, int fd)
821: {
822: unsigned int i;
823: struct elf_shdr sechdr, symtab, strtab;
824: char *strings;
825: struct syminfo *s;
826:
827: lseek(fd, hdr->e_shoff, SEEK_SET);
828: for (i = 0; i < hdr->e_shnum; i++) {
829: if (read(fd, &sechdr, sizeof(sechdr)) != sizeof(sechdr))
830: return;
831: #ifdef BSWAP_NEEDED
832: bswap_shdr(&sechdr);
833: #endif
834: if (sechdr.sh_type == SHT_SYMTAB) {
835: symtab = sechdr;
836: lseek(fd, hdr->e_shoff
837: + sizeof(sechdr) * sechdr.sh_link, SEEK_SET);
838: if (read(fd, &strtab, sizeof(strtab))
839: != sizeof(strtab))
840: return;
841: #ifdef BSWAP_NEEDED
842: bswap_shdr(&strtab);
843: #endif
844: goto found;
845: }
846: }
847: return; /* Shouldn't happen... */
848:
849: found:
850: /* Now know where the strtab and symtab are. Snarf them. */
851: s = malloc(sizeof(*s));
852: s->disas_symtab = malloc(symtab.sh_size);
853: s->disas_strtab = strings = malloc(strtab.sh_size);
854: if (!s->disas_symtab || !s->disas_strtab)
855: return;
856:
857: lseek(fd, symtab.sh_offset, SEEK_SET);
858: if (read(fd, s->disas_symtab, symtab.sh_size) != symtab.sh_size)
859: return;
860:
861: #ifdef BSWAP_NEEDED
862: for (i = 0; i < symtab.sh_size / sizeof(struct elf_sym); i++)
863: bswap_sym(s->disas_symtab + sizeof(struct elf_sym)*i);
864: #endif
865:
866: lseek(fd, strtab.sh_offset, SEEK_SET);
867: if (read(fd, strings, strtab.sh_size) != strtab.sh_size)
868: return;
869: s->disas_num_syms = symtab.sh_size / sizeof(struct elf_sym);
870: s->next = syminfos;
871: syminfos = s;
872: }
873:
1.1.1.4 root 874: int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
875: struct image_info * info)
1.1 root 876: {
877: struct elfhdr elf_ex;
878: struct elfhdr interp_elf_ex;
879: struct exec interp_ex;
880: int interpreter_fd = -1; /* avoid warning */
881: unsigned long load_addr, load_bias;
882: int load_addr_set = 0;
883: unsigned int interpreter_type = INTERPRETER_NONE;
884: unsigned char ibcs2_interpreter;
885: int i;
886: unsigned long mapped_addr;
887: struct elf_phdr * elf_ppnt;
888: struct elf_phdr *elf_phdata;
889: unsigned long elf_bss, k, elf_brk;
890: int retval;
891: char * elf_interpreter;
892: unsigned long elf_entry, interp_load_addr = 0;
893: int status;
894: unsigned long start_code, end_code, end_data;
895: unsigned long elf_stack;
896: char passed_fileno[6];
897:
898: ibcs2_interpreter = 0;
899: status = 0;
900: load_addr = 0;
901: load_bias = 0;
902: elf_ex = *((struct elfhdr *) bprm->buf); /* exec-header */
903: #ifdef BSWAP_NEEDED
904: bswap_ehdr(&elf_ex);
905: #endif
906:
907: /* First of all, some simple consistency checks */
908: if ((elf_ex.e_type != ET_EXEC && elf_ex.e_type != ET_DYN) ||
909: (! elf_check_arch(elf_ex.e_machine))) {
910: return -ENOEXEC;
911: }
912:
1.1.1.4 root 913: bprm->p = copy_elf_strings(1, &bprm->filename, bprm->page, bprm->p);
914: bprm->p = copy_elf_strings(bprm->envc,bprm->envp,bprm->page,bprm->p);
915: bprm->p = copy_elf_strings(bprm->argc,bprm->argv,bprm->page,bprm->p);
916: if (!bprm->p) {
917: retval = -E2BIG;
918: }
919:
1.1 root 920: /* Now read in all of the header information */
921: elf_phdata = (struct elf_phdr *)malloc(elf_ex.e_phentsize*elf_ex.e_phnum);
922: if (elf_phdata == NULL) {
923: return -ENOMEM;
924: }
925:
926: retval = lseek(bprm->fd, elf_ex.e_phoff, SEEK_SET);
927: if(retval > 0) {
928: retval = read(bprm->fd, (char *) elf_phdata,
929: elf_ex.e_phentsize * elf_ex.e_phnum);
930: }
931:
932: if (retval < 0) {
933: perror("load_elf_binary");
934: exit(-1);
935: free (elf_phdata);
936: return -errno;
937: }
938:
939: #ifdef BSWAP_NEEDED
940: elf_ppnt = elf_phdata;
941: for (i=0; i<elf_ex.e_phnum; i++, elf_ppnt++) {
942: bswap_phdr(elf_ppnt);
943: }
944: #endif
945: elf_ppnt = elf_phdata;
946:
947: elf_bss = 0;
948: elf_brk = 0;
949:
950:
951: elf_stack = ~0UL;
952: elf_interpreter = NULL;
953: start_code = ~0UL;
954: end_code = 0;
955: end_data = 0;
956:
957: for(i=0;i < elf_ex.e_phnum; i++) {
958: if (elf_ppnt->p_type == PT_INTERP) {
959: if ( elf_interpreter != NULL )
960: {
961: free (elf_phdata);
962: free(elf_interpreter);
963: close(bprm->fd);
964: return -EINVAL;
965: }
966:
967: /* This is the program interpreter used for
968: * shared libraries - for now assume that this
969: * is an a.out format binary
970: */
971:
972: elf_interpreter = (char *)malloc(elf_ppnt->p_filesz);
973:
974: if (elf_interpreter == NULL) {
975: free (elf_phdata);
976: close(bprm->fd);
977: return -ENOMEM;
978: }
979:
980: retval = lseek(bprm->fd, elf_ppnt->p_offset, SEEK_SET);
981: if(retval >= 0) {
982: retval = read(bprm->fd, elf_interpreter, elf_ppnt->p_filesz);
983: }
984: if(retval < 0) {
985: perror("load_elf_binary2");
986: exit(-1);
987: }
988:
989: /* If the program interpreter is one of these two,
990: then assume an iBCS2 image. Otherwise assume
991: a native linux image. */
992:
993: /* JRP - Need to add X86 lib dir stuff here... */
994:
995: if (strcmp(elf_interpreter,"/usr/lib/libc.so.1") == 0 ||
996: strcmp(elf_interpreter,"/usr/lib/ld.so.1") == 0) {
997: ibcs2_interpreter = 1;
998: }
999:
1000: #if 0
1001: printf("Using ELF interpreter %s\n", elf_interpreter);
1002: #endif
1003: if (retval >= 0) {
1004: retval = open(path(elf_interpreter), O_RDONLY);
1005: if(retval >= 0) {
1006: interpreter_fd = retval;
1007: }
1008: else {
1009: perror(elf_interpreter);
1010: exit(-1);
1011: /* retval = -errno; */
1012: }
1013: }
1014:
1015: if (retval >= 0) {
1016: retval = lseek(interpreter_fd, 0, SEEK_SET);
1017: if(retval >= 0) {
1018: retval = read(interpreter_fd,bprm->buf,128);
1019: }
1020: }
1021: if (retval >= 0) {
1022: interp_ex = *((struct exec *) bprm->buf); /* aout exec-header */
1023: interp_elf_ex=*((struct elfhdr *) bprm->buf); /* elf exec-header */
1024: }
1025: if (retval < 0) {
1026: perror("load_elf_binary3");
1027: exit(-1);
1028: free (elf_phdata);
1029: free(elf_interpreter);
1030: close(bprm->fd);
1031: return retval;
1032: }
1033: }
1034: elf_ppnt++;
1035: }
1036:
1037: /* Some simple consistency checks for the interpreter */
1038: if (elf_interpreter){
1039: interpreter_type = INTERPRETER_ELF | INTERPRETER_AOUT;
1040:
1041: /* Now figure out which format our binary is */
1042: if ((N_MAGIC(interp_ex) != OMAGIC) && (N_MAGIC(interp_ex) != ZMAGIC) &&
1043: (N_MAGIC(interp_ex) != QMAGIC)) {
1044: interpreter_type = INTERPRETER_ELF;
1045: }
1046:
1047: if (interp_elf_ex.e_ident[0] != 0x7f ||
1048: strncmp(&interp_elf_ex.e_ident[1], "ELF",3) != 0) {
1049: interpreter_type &= ~INTERPRETER_ELF;
1050: }
1051:
1052: if (!interpreter_type) {
1053: free(elf_interpreter);
1054: free(elf_phdata);
1055: close(bprm->fd);
1056: return -ELIBBAD;
1057: }
1058: }
1059:
1060: /* OK, we are done with that, now set up the arg stuff,
1061: and then start this sucker up */
1062:
1.1.1.4 root 1063: {
1.1 root 1064: char * passed_p;
1065:
1066: if (interpreter_type == INTERPRETER_AOUT) {
1067: snprintf(passed_fileno, sizeof(passed_fileno), "%d", bprm->fd);
1068: passed_p = passed_fileno;
1069:
1070: if (elf_interpreter) {
1.1.1.4 root 1071: bprm->p = copy_elf_strings(1,&passed_p,bprm->page,bprm->p);
1.1 root 1072: bprm->argc++;
1073: }
1074: }
1075: if (!bprm->p) {
1076: if (elf_interpreter) {
1077: free(elf_interpreter);
1078: }
1079: free (elf_phdata);
1080: close(bprm->fd);
1081: return -E2BIG;
1082: }
1083: }
1084:
1085: /* OK, This is the point of no return */
1086: info->end_data = 0;
1087: info->end_code = 0;
1088: info->start_mmap = (unsigned long)ELF_START_MMAP;
1089: info->mmap = 0;
1090: elf_entry = (unsigned long) elf_ex.e_entry;
1091:
1092: /* Do this so that we can load the interpreter, if need be. We will
1093: change some of these later */
1094: info->rss = 0;
1095: bprm->p = setup_arg_pages(bprm->p, bprm, info);
1096: info->start_stack = bprm->p;
1097:
1098: /* Now we do a little grungy work by mmaping the ELF image into
1099: * the correct location in memory. At this point, we assume that
1100: * the image should be loaded at fixed address, not at a variable
1101: * address.
1102: */
1103:
1104: for(i = 0, elf_ppnt = elf_phdata; i < elf_ex.e_phnum; i++, elf_ppnt++) {
1105: int elf_prot = 0;
1106: int elf_flags = 0;
1107: unsigned long error;
1108:
1109: if (elf_ppnt->p_type != PT_LOAD)
1110: continue;
1111:
1112: if (elf_ppnt->p_flags & PF_R) elf_prot |= PROT_READ;
1113: if (elf_ppnt->p_flags & PF_W) elf_prot |= PROT_WRITE;
1114: if (elf_ppnt->p_flags & PF_X) elf_prot |= PROT_EXEC;
1115: elf_flags = MAP_PRIVATE | MAP_DENYWRITE;
1116: if (elf_ex.e_type == ET_EXEC || load_addr_set) {
1117: elf_flags |= MAP_FIXED;
1118: } else if (elf_ex.e_type == ET_DYN) {
1119: /* Try and get dynamic programs out of the way of the default mmap
1120: base, as well as whatever program they might try to exec. This
1121: is because the brk will follow the loader, and is not movable. */
1122: /* NOTE: for qemu, we do a big mmap to get enough space
1123: without harcoding any address */
1124: error = target_mmap(0, ET_DYN_MAP_SIZE,
1125: PROT_NONE, MAP_PRIVATE | MAP_ANON,
1126: -1, 0);
1127: if (error == -1) {
1128: perror("mmap");
1129: exit(-1);
1130: }
1131: load_bias = TARGET_ELF_PAGESTART(error - elf_ppnt->p_vaddr);
1132: }
1133:
1134: error = target_mmap(TARGET_ELF_PAGESTART(load_bias + elf_ppnt->p_vaddr),
1135: (elf_ppnt->p_filesz +
1136: TARGET_ELF_PAGEOFFSET(elf_ppnt->p_vaddr)),
1137: elf_prot,
1138: (MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE),
1139: bprm->fd,
1140: (elf_ppnt->p_offset -
1141: TARGET_ELF_PAGEOFFSET(elf_ppnt->p_vaddr)));
1142: if (error == -1) {
1143: perror("mmap");
1144: exit(-1);
1145: }
1146:
1147: #ifdef LOW_ELF_STACK
1148: if (TARGET_ELF_PAGESTART(elf_ppnt->p_vaddr) < elf_stack)
1149: elf_stack = TARGET_ELF_PAGESTART(elf_ppnt->p_vaddr);
1150: #endif
1151:
1152: if (!load_addr_set) {
1153: load_addr_set = 1;
1154: load_addr = elf_ppnt->p_vaddr - elf_ppnt->p_offset;
1155: if (elf_ex.e_type == ET_DYN) {
1156: load_bias += error -
1157: TARGET_ELF_PAGESTART(load_bias + elf_ppnt->p_vaddr);
1158: load_addr += load_bias;
1159: }
1160: }
1161: k = elf_ppnt->p_vaddr;
1162: if (k < start_code)
1163: start_code = k;
1164: k = elf_ppnt->p_vaddr + elf_ppnt->p_filesz;
1165: if (k > elf_bss)
1166: elf_bss = k;
1167: if ((elf_ppnt->p_flags & PF_X) && end_code < k)
1168: end_code = k;
1169: if (end_data < k)
1170: end_data = k;
1171: k = elf_ppnt->p_vaddr + elf_ppnt->p_memsz;
1172: if (k > elf_brk) elf_brk = k;
1173: }
1174:
1175: elf_entry += load_bias;
1176: elf_bss += load_bias;
1177: elf_brk += load_bias;
1178: start_code += load_bias;
1179: end_code += load_bias;
1180: // start_data += load_bias;
1181: end_data += load_bias;
1182:
1183: if (elf_interpreter) {
1184: if (interpreter_type & 1) {
1185: elf_entry = load_aout_interp(&interp_ex, interpreter_fd);
1186: }
1187: else if (interpreter_type & 2) {
1188: elf_entry = load_elf_interp(&interp_elf_ex, interpreter_fd,
1189: &interp_load_addr);
1190: }
1191:
1192: close(interpreter_fd);
1193: free(elf_interpreter);
1194:
1195: if (elf_entry == ~0UL) {
1196: printf("Unable to load interpreter\n");
1197: free(elf_phdata);
1198: exit(-1);
1199: return 0;
1200: }
1201: }
1202:
1203: free(elf_phdata);
1204:
1205: if (loglevel)
1206: load_symbols(&elf_ex, bprm->fd);
1207:
1208: if (interpreter_type != INTERPRETER_AOUT) close(bprm->fd);
1209: info->personality = (ibcs2_interpreter ? PER_SVR4 : PER_LINUX);
1210:
1211: #ifdef LOW_ELF_STACK
1212: info->start_stack = bprm->p = elf_stack - 4;
1213: #endif
1.1.1.3 root 1214: bprm->p = create_elf_tables(bprm->p,
1.1 root 1215: bprm->argc,
1216: bprm->envc,
1217: &elf_ex,
1218: load_addr, load_bias,
1219: interp_load_addr,
1220: (interpreter_type == INTERPRETER_AOUT ? 0 : 1),
1221: info);
1222: info->start_brk = info->brk = elf_brk;
1223: info->end_code = end_code;
1224: info->start_code = start_code;
1.1.1.4 root 1225: info->start_data = end_code;
1.1 root 1226: info->end_data = end_data;
1227: info->start_stack = bprm->p;
1228:
1229: /* Calling set_brk effectively mmaps the pages that we need for the bss and break
1230: sections */
1231: set_brk(elf_bss, elf_brk);
1232:
1.1.1.5 ! root 1233: padzero(elf_bss, elf_brk);
1.1 root 1234:
1235: #if 0
1236: printf("(start_brk) %x\n" , info->start_brk);
1237: printf("(end_code) %x\n" , info->end_code);
1238: printf("(start_code) %x\n" , info->start_code);
1239: printf("(end_data) %x\n" , info->end_data);
1240: printf("(start_stack) %x\n" , info->start_stack);
1241: printf("(brk) %x\n" , info->brk);
1242: #endif
1243:
1244: if ( info->personality == PER_SVR4 )
1245: {
1246: /* Why this, you ask??? Well SVr4 maps page 0 as read-only,
1247: and some applications "depend" upon this behavior.
1248: Since we do not have the power to recompile these, we
1249: emulate the SVr4 behavior. Sigh. */
1250: mapped_addr = target_mmap(0, qemu_host_page_size, PROT_READ | PROT_EXEC,
1251: MAP_FIXED | MAP_PRIVATE, -1, 0);
1252: }
1253:
1254: info->entry = elf_entry;
1255:
1256: return 0;
1257: }
1258:
1259: static int load_aout_interp(void * exptr, int interp_fd)
1260: {
1261: printf("a.out interpreter not yet supported\n");
1262: return(0);
1263: }
1264:
1.1.1.4 root 1265: void do_init_thread(struct target_pt_regs *regs, struct image_info *infop)
1266: {
1267: init_thread(regs, infop);
1268: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.